Our five year old may not write the letters of his name correctly, but he can adequately draw and tell you about these three things. You get points if you can correctly guess these literary references! I included links below so that you can read more about them and compare for yourself.
The jabberwocky is a poem (about slaying the jabberwock) by Lewis Carroll (of Alice in Wonderland fame), cthulhu is a cosmic entity created by author H.P. Lovecraft (we have his collection of short stories), and tchernobog is a Slavic deity who pops up in lots of things, but most notably for my kids in a Disney special, House of Villains and also in Fantasia.